When attached, the headlamp allows the user to work hands-free. When the head is detached, it becomes a hand-held rechargeable flashlight or magnetic work light, leaving a secondary light in the headlamp base. The user now has TWO light sources, no shadows. As a single headlamp, the MORF B300 outputs 300 lumens. When the head is detached, the hand-held rechargeable headlamp is 100 lumens, leaving the base (secondary headlamp) with a light output of 50 lumens. Limited lifetime warranty.